From 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Tue, 21 Feb 2023 18:24:12 -0800 Subject: Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next Pull networking updates from Jakub Kicinski: "Core: - Add dedicated kmem_cache for typical/small skb->head, avoid having to access struct page at kfree time, and improve memory use. - Introduce sysctl to set default RPS configuration for new netdevs. - Define Netlink protocol specification format which can be used to describe messages used by each family and auto-generate parsers. Add tools for generating kernel data structures and uAPI headers. - Expose all net/core sysctls inside netns. - Remove 4s sleep in netpoll if carrier is instantly detected on boot. - Add configurable limit of MDB entries per port, and port-vlan. - Continue populating drop reasons throughout the stack. - Retire a handful of legacy Qdiscs and classifiers. Protocols: - Support IPv4 big TCP (TSO frames larger than 64kB). - Add IP_LOCAL_PORT_RANGE socket option, to control local port range on socket by socket basis. - Track and report in procfs number of MPTCP sockets used. - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path manager. - IPv6: don't check net.ipv6.route.max_size and rely on garbage collection to free memory (similarly to IPv4). - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986). - ICMP: add per-rate limit counters. - Add support for user scanning requests in ieee802154. - Remove static WEP support. - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate reporting. - WiFi 7 EHT channel puncturing support (client & AP). BPF: - Add a rbtree data structure following the "next-gen data structure" precedent set by recently added linked list, that is, by using kfunc + kptr instead of adding a new BPF map type. - Expose XDP hints via kfuncs with initial support for RX hash and timestamp metadata. - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to better support decap on GRE tunnel devices not operating in collect metadata. - Improve x86 JIT's codegen for PROBE_MEM runtime error checks. - Remove the need for trace_printk_lock for bpf_trace_printk and bpf_trace_vprintk helpers. - Extend libbpf's bpf_tracing.h support for tracing arguments of kprobes/uprobes and syscall as a special case. - Significantly reduce the search time for module symbols by livepatch and BPF. - Enable cpumasks to be used as kptrs, which is useful for tracing programs tracking which tasks end up running on which CPUs in different time intervals. - Add support for BPF trampoline on s390x and riscv64. - Add capability to export the XDP features supported by the NIC. - Add __bpf_kfunc tag for marking kernel functions as kfuncs. - Add cgroup.memory=nobpf kernel parameter option to disable BPF memory accounting for container environments. Netfilter: - Remove the CLUSTERIP target. It has been marked as obsolete for years, and we still have WARN splats wrt races of the out-of-band /proc interface installed by this target. - Add 'destroy' commands to nf_tables. They are identical to the existing 'delete' commands, but do not return an error if the referenced object (set, chain, rule...) did not exist. Driver API: - Improve cpumask_local_spread() locality to help NICs set the right IRQ affinity on AMD platforms. - Separate C22 and C45 MDIO bus transactions more clearly. - Introduce new DCB table to control DSCP rewrite on egress. - Support configuration of Physical Layer Collision Avoidance (PLCA) Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of shared medium Ethernet. - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing preemption of low priority frames by high priority frames. - Add support for controlling MACSec offload using netlink SET. - Rework devlink instance refcounts to allow registration and de-registration under the instance lock. Split the code into multiple files, drop some of the unnecessarily granular locks and factor out common parts of netlink operation handling. - Add TX frame aggregation parameters (for USB drivers). - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning messages with notifications for debug. - Allow offloading of UDP NEW connections via act_ct. - Add support for per action HW stats in TC. - Support hardware miss to TC action (continue processing in SW from a specific point in the action chain). - Warn if old Wireless Extension user space interface is used with modern cfg80211/mac80211 drivers. Do not support Wireless Extensions for Wi-Fi 7 devices at all. Everyone should switch to using nl80211 interface instead. - Improve the CAN bit timing configuration. Use extack to return error messages directly to user space, update the SJW handling, including the definition of a new default value that will benefit CAN-FD controllers, by increasing their oscillator tolerance. New hardware / drivers: - Ethernet: - nVidia BlueField-3 support (control traffic driver) - Ethernet support for imx93 SoCs - Motorcomm yt8531 gigabit Ethernet PHY - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA) - Microchip LAN8841 PHY (incl. cable diagnostics and PTP) - Amlogic gxl MDIO mux - WiFi: - RealTek RTL8188EU (rtl8xxxu) - Qualcomm Wi-Fi 7 devices (ath12k) - CAN: - Renesas R-Car V4H Drivers: - Bluetooth: - Set Per Platform Antenna Gain (PPAG) for Intel controllers. - Ethernet NICs: - Intel (1G, igc): - support TSN / Qbv / packet scheduling features of i226 model - Intel (100G, ice): - use GNSS subsystem instead of TTY - multi-buffer XDP support - extend support for GPIO pins to E823 devices - nVidia/Mellanox: - update the shared buffer configuration on PFC commands - implement PTP adjphase function for HW offset control - TC support for Geneve and GRE with VF tunnel offload - more efficient crypto key management method - multi-port eswitch support - Netronome/Corigine: - add DCB IEEE support - support IPsec offloading for NFP3800 - Freescale/NXP (enetc): - support XDP_REDIRECT for XDP non-linear buffers - improve reconfig, avoid link flap and waiting for idle - support MAC Merge layer - Other NICs: - sfc/ef100: add basic devlink support for ef100 - ionic: rx_push mode operation (writing descriptors via MMIO) - bnxt: use the auxiliary bus abstraction for RDMA - r8169: disable ASPM and reset bus in case of tx timeout - cpsw: support QSGMII mode for J721e CPSW9G - cpts: support pulse-per-second output - ngbe: add an mdio bus driver - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing - r8152: handle devices with FW with NCM support - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation - virtio-net: support multi buffer XDP - virtio/vsock: replace virtio_vsock_pkt with sk_buff - tsnep: XDP support - Ethernet high-speed switches: - nVidia/Mellanox (mlxsw): - add support for latency TLV (in FW control messages) - Microchip (sparx5): - separate explicit and implicit traffic forwarding rules, make the implicit rules always active - add support for egress DSCP rewrite - IS0 VCAP support (Ingress Classification) - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS etc.) - ES2 VCAP support (Egress Access Control) - support for Per-Stream Filtering and Policing (802.1Q, 8.6.5.1) - Ethernet embedded switches: - Marvell (mv88e6xxx): - add MAB (port auth) offload support - enable PTP receive for mv88e6390 - NXP (ocelot): - support MAC Merge layer - support for the the vsc7512 internal copper phys - Microchip: - lan9303: convert to PHYLINK - lan966x: support TC flower filter statistics - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x - lan937x: support Credit Based Shaper configuration - ksz9477: support Energy Efficient Ethernet - other: - qca8k: convert to regmap read/write API, use bulk operations - rswitch: Improve TX timestamp accuracy - Intel WiFi (iwlwifi): - EHT (Wi-Fi 7) rate reporting - STEP equalizer support: transfer some STEP (connection to radio on platforms with integrated wifi) related parameters from the BIOS to the firmware. - Qualcomm 802.11ax WiFi (ath11k): - IPQ5018 support - Fine Timing Measurement (FTM) responder role support - channel 177 support - MediaTek WiFi (mt76): - per-PHY LED support - mt7996: EHT (Wi-Fi 7) support - Wireless Ethernet Dispatch (WED) reset support - switch to using page pool allocator - RealTek WiFi (rtw89): - support new version of Bluetooth co-existance - Mobile: - rmnet: support TX aggregation" * tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits) page_pool: add a comment explaining the fragment counter usage net: ethtool: fix __ethtool_dev_mm_supported() implementation ethtool: pse-pd: Fix double word in comments xsk: add linux/vmalloc.h to xsk.c sefltests: netdevsim: wait for devlink instance after netns removal selftest: fib_tests: Always cleanup before exit net/mlx5e: Align IPsec ASO result memory to be as required by hardware net/mlx5e: TC, Set CT miss to the specific ct action instance net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG net/mlx5: Refactor tc miss handling to a single function net/mlx5: Kconfig: Make tc offload depend on tc skb extension net/sched: flower: Support hardware miss to tc action net/sched: flower: Move filter handle initialization earlier net/sched: cls_api: Support hardware miss to tc action net/sched: Rename user cookie and act cookie sfc: fix builds without CONFIG_RTC_LIB sfc: clean up some inconsistent indentings net/mlx4_en: Introduce flexible array to silence overflow warning net: lan966x: Fix possible deadlock inside PTP net/ulp: Remove redundant ->clone() test in inet_clone_ulp(). ... --- drivers/gpu/drm/drm_mode_object.c | 589 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 589 insertions(+) create mode 100644 drivers/gpu/drm/drm_mode_object.c (limited to 'drivers/gpu/drm/drm_mode_object.c') diff --git a/drivers/gpu/drm/drm_mode_object.c b/drivers/gpu/drm/drm_mode_object.c new file mode 100644 index 000000000..ba1608eff --- /dev/null +++ b/drivers/gpu/drm/drm_mode_object.c @@ -0,0 +1,589 @@ +/* + * Copyright (c) 2016 Intel Corporation + * + * Permission to use, copy, modify, distribute, and sell this software and its + * documentation for any purpose is hereby granted without fee, provided that + * the above copyright notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting documentation, and + * that the name of the copyright holders not be used in advertising or + * publicity pertaining to distribution of the software without specific, + * written prior permission. The copyright holders make no representations + * about the suitability of this software for any purpose. It is provided "as + * is" without express or implied warranty. + * + * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, + * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO + * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR + * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, + * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER + * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE + * OF THIS SOFTWARE. + */ + +#include +#include + +#include +#include +#include +#include +#include +#include + +#include "drm_crtc_internal.h" + +/* + * Internal function to assign a slot in the object idr and optionally + * register the object into the idr. + */ +int __drm_mode_object_add(struct drm_device *dev, struct drm_mode_object *obj, + uint32_t obj_type, bool register_obj, + void (*obj_free_cb)(struct kref *kref)) +{ + int ret; + + WARN_ON(!dev->driver->load && dev->registered && !obj_free_cb); + + mutex_lock(&dev->mode_config.idr_mutex); + ret = idr_alloc(&dev->mode_config.object_idr, register_obj ? obj : NULL, + 1, 0, GFP_KERNEL); + if (ret >= 0) { + /* + * Set up the object linking under the protection of the idr + * lock so that other users can't see inconsistent state. + */ + obj->id = ret; + obj->type = obj_type; + if (obj_free_cb) { + obj->free_cb = obj_free_cb; + kref_init(&obj->refcount); + } + } + mutex_unlock(&dev->mode_config.idr_mutex); + + return ret < 0 ? ret : 0; +} + +/** + * drm_mode_object_add - allocate a new modeset identifier + * @dev: DRM device + * @obj: object pointer, used to generate unique ID + * @obj_type: object type + * + * Create a unique identifier based on @ptr in @dev's identifier space. Used + * for tracking modes, CRTCs and connectors. + * + * Returns: + * Zero on success, error code on failure. + */ +int drm_mode_object_add(struct drm_device *dev, + struct drm_mode_object *obj, uint32_t obj_type) +{ + return __drm_mode_object_add(dev, obj, obj_type, true, NULL); +} + +void drm_mode_object_register(struct drm_device *dev, + struct drm_mode_object *obj) +{ + mutex_lock(&dev->mode_config.idr_mutex); + idr_replace(&dev->mode_config.object_idr, obj, obj->id); + mutex_unlock(&dev->mode_config.idr_mutex); +} + +/** + * drm_mode_object_unregister - free a modeset identifier + * @dev: DRM device + * @object: object to free + * + * Free @id from @dev's unique identifier pool. + * This function can be called multiple times, and guards against + * multiple removals. + * These modeset identifiers are _not_ reference counted. Hence don't use this + * for reference counted modeset objects like framebuffers. + */ +void drm_mode_object_unregister(struct drm_device *dev, + struct drm_mode_object *object) +{ + WARN_ON(!dev->driver->load && dev->registered && !object->free_cb); + + mutex_lock(&dev->mode_config.idr_mutex); + if (object->id) { + idr_remove(&dev->mode_config.object_idr, object->id); + object->id = 0; + } + mutex_unlock(&dev->mode_config.idr_mutex); +} + +/** + * drm_mode_object_lease_required - check types which must be leased to be used + * @type: type of object + * + * Returns whether the provided type of drm_mode_object must + * be owned or leased to be used by a process. + */ +bool drm_mode_object_lease_required(uint32_t type) +{ + switch(type) { + case DRM_MODE_OBJECT_CRTC: + case DRM_MODE_OBJECT_CONNECTOR: + case DRM_MODE_OBJECT_PLANE: + return true; + default: + return false; + } +} + +struct drm_mode_object *__drm_mode_object_find(struct drm_device *dev, + struct drm_file *file_priv, + uint32_t id, uint32_t type) +{ + struct drm_mode_object *obj = NULL; + + mutex_lock(&dev->mode_config.idr_mutex); + obj = idr_find(&dev->mode_config.object_idr, id); + if (obj && type != DRM_MODE_OBJECT_ANY && obj->type != type) + obj = NULL; + if (obj && obj->id != id) + obj = NULL; + + if (obj && drm_mode_object_lease_required(obj->type) && + !_drm_lease_held(file_priv, obj->id)) + obj = NULL; + + if (obj && obj->free_cb) { + if (!kref_get_unless_zero(&obj->refcount)) + obj = NULL; + } + mutex_unlock(&dev->mode_config.idr_mutex); + + return obj; +} + +/** + * drm_mode_object_find - look up a drm object with static lifetime + * @dev: drm device + * @file_priv: drm file + * @id: id of the mode object + * @type: type of the mode object + * + * This function is used to look up a modeset object. It will acquire a + * reference for reference counted objects. This reference must be dropped again + * by callind drm_mode_object_put(). + */ +struct drm_mode_object *drm_mode_object_find(struct drm_device *dev, + struct drm_file *file_priv, + uint32_t id, uint32_t type) +{ + struct drm_mode_object *obj = NULL; + + obj = __drm_mode_object_find(dev, file_priv, id, type); + return obj; +} +EXPORT_SYMBOL(drm_mode_object_find); + +/** + * drm_mode_object_put - release a mode object reference + * @obj: DRM mode object + * + * This function decrements the object's refcount if it is a refcounted modeset + * object. It is a no-op on any other object. This is used to drop references + * acquired with drm_mode_object_get(). + */ +void drm_mode_object_put(struct drm_mode_object *obj) +{ + if (obj->free_cb) { + DRM_DEBUG("OBJ ID: %d (%d)\n", obj->id, kref_read(&obj->refcount)); + kref_put(&obj->refcount, obj->free_cb); + } +} +EXPORT_SYMBOL(drm_mode_object_put); + +/** + * drm_mode_object_get - acquire a mode object reference + * @obj: DRM mode object + * + * This function increments the object's refcount if it is a refcounted modeset + * object. It is a no-op on any other object. References should be dropped again + * by calling drm_mode_object_put(). + */ +void drm_mode_object_get(struct drm_mode_object *obj) +{ + if (obj->free_cb) { + DRM_DEBUG("OBJ ID: %d (%d)\n", obj->id, kref_read(&obj->refcount)); + kref_get(&obj->refcount); + } +} +EXPORT_SYMBOL(drm_mode_object_get); + +/** + * drm_object_attach_property - attach a property to a modeset object + * @obj: drm modeset object + * @property: property to attach + * @init_val: initial value of the property + * + * This attaches the given property to the modeset object with the given initial + * value. Currently this function cannot fail since the properties are stored in + * a statically sized array. + * + * Note that all properties must be attached before the object itself is + * registered and accessible from userspace. + */ +void drm_object_attach_property(struct drm_mode_object *obj, + struct drm_property *property, + uint64_t init_val) +{ + int count = obj->properties->count; + struct drm_device *dev = property->dev; + + + if (obj->type == DRM_MODE_OBJECT_CONNECTOR) { + struct drm_connector *connector = obj_to_connector(obj); + + WARN_ON(!dev->driver->load && + connector->registration_state == DRM_CONNECTOR_REGISTERED); + } else { + WARN_ON(!dev->driver->load && dev->registered); + } + + if (count == DRM_OBJECT_MAX_PROPERTY) { + WARN(1, "Failed to attach object property (type: 0x%x). Please " + "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time " + "you see this message on the same object type.\n", + obj->type); + return; + } + + obj->properties->properties[count] = property; + obj->properties->values[count] = init_val; + obj->properties->count++; +} +EXPORT_SYMBOL(drm_object_attach_property); + +/** + * drm_object_property_set_value - set the value of a property + * @obj: drm mode object to set property value for + * @property: property to set + * @val: value the property should be set to + * + * This function sets a given property on a given object. This function only + * changes the software state of the property, it does not call into the + * driver's ->set_property callback. + * + * Note that atomic drivers should not have any need to call this, the core will + * ensure consistency of values reported back to userspace through the + * appropriate ->atomic_get_property callback. Only legacy drivers should call + * this function to update the tracked value (after clamping and other + * restrictions have been applied). + * + * Returns: + * Zero on success, error code on failure. + */ +int drm_object_property_set_value(struct drm_mode_object *obj, + struct drm_property *property, uint64_t val) +{ + int i; + + WARN_ON(drm_drv_uses_atomic_modeset(property->dev) && + !(property->flags & DRM_MODE_PROP_IMMUTABLE)); + + for (i = 0; i < obj->properties->count; i++) { + if (obj->properties->properties[i] == property) { + obj->properties->values[i] = val; + return 0; + } + } + + return -EINVAL; +} +EXPORT_SYMBOL(drm_object_property_set_value); + +static int __drm_object_property_get_prop_value(struct drm_mode_object *obj, + struct drm_property *property, + uint64_t *val) +{ + int i; + + for (i = 0; i < obj->properties->count; i++) { + if (obj->properties->properties[i] == property) { + *val = obj->properties->values[i]; + return 0; + } + } + + return -EINVAL; +} + +static int __drm_object_property_get_value(struct drm_mode_object *obj, + struct drm_property *property, + uint64_t *val) +{ + + /* read-only properties bypass atomic mechanism and still store + * their value in obj->properties->values[].. mostly to avoid + * having to deal w/ EDID and similar props in atomic paths: + */ + if (drm_drv_uses_atomic_modeset(property->dev) && + !(property->flags & DRM_MODE_PROP_IMMUTABLE)) + return drm_atomic_get_property(obj, property, val); + + return __drm_object_property_get_prop_value(obj, property, val); +} + +/** + * drm_object_property_get_value - retrieve the value of a property + * @obj: drm mode object to get property value from + * @property: property to retrieve + * @val: storage for the property value + * + * This function retrieves the softare state of the given property for the given + * property. Since there is no driver callback to retrieve the current property + * value this might be out of sync with the hardware, depending upon the driver + * and property. + * + * Atomic drivers should never call this function directly, the core will read + * out property values through the various ->atomic_get_property callbacks. + * + * Returns: + * Zero on success, error code on failure. + */ +int drm_object_property_get_value(struct drm_mode_object *obj, + struct drm_property *property, uint64_t *val) +{ + WARN_ON(drm_drv_uses_atomic_modeset(property->dev)); + + return __drm_object_property_get_value(obj, property, val); +} +EXPORT_SYMBOL(drm_object_property_get_value); + +/** + * drm_object_property_get_default_value - retrieve the default value of a + * property when in atomic mode. + * @obj: drm mode object to get property value from + * @property: property to retrieve + * @val: storage for the property value + * + * This function retrieves the default state of the given property as passed in + * to drm_object_attach_property + * + * Only atomic drivers should call this function directly, as for non-atomic + * drivers it will return the current value. + * + * Returns: + * Zero on success, error code on failure. + */ +int drm_object_property_get_default_value(struct drm_mode_object *obj, + struct drm_property *property, + uint64_t *val) +{ + WARN_ON(!drm_drv_uses_atomic_modeset(property->dev)); + + return __drm_object_property_get_prop_value(obj, property, val); +} +EXPORT_SYMBOL(drm_object_property_get_default_value); + +/* helper for getconnector and getproperties ioctls */ +int drm_mode_object_get_properties(struct drm_mode_object *obj, bool atomic, + uint32_t __user *prop_ptr, + uint64_t __user *prop_values, + uint32_t *arg_count_props) +{ + int i, ret, count; + + for (i = 0, count = 0; i < obj->properties->count; i++) { + struct drm_property *prop = obj->properties->properties[i]; + uint64_t val; + + if ((prop->flags & DRM_MODE_PROP_ATOMIC) && !atomic) + continue; + + if (*arg_count_props > count) { + ret = __drm_object_property_get_value(obj, prop, &val); + if (ret) + return ret; + + if (put_user(prop->base.id, prop_ptr + count)) + return -EFAULT; + + if (put_user(val, prop_values + count)) + return -EFAULT; + } + + count++; + } + *arg_count_props = count; + + return 0; +} + +/** + * drm_mode_obj_get_properties_ioctl - get the current value of a object's property + * @dev: DRM device + * @data: ioctl data + * @file_priv: DRM file info + * + * This function retrieves the current value for an object's property. Compared + * to the connector specific ioctl this one is extended to also work on crtc and + * plane objects. + * + * Called by the user via ioctl. + * + * Returns: + * Zero on success, negative errno on failure. + */ +int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + struct drm_mode_obj_get_properties *arg = data; + struct drm_mode_object *obj; + struct drm_modeset_acquire_ctx ctx; + int ret = 0; + + if (!drm_core_check_feature(dev, DRIVER_MODESET)) + return -EOPNOTSUPP; + + DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, ret); + + obj = drm_mode_object_find(dev, file_priv, arg->obj_id, arg->obj_type); + if (!obj) { + ret = -ENOENT; + goto out; + } + if (!obj->properties) { + ret = -EINVAL; + goto out_unref; + } + + ret = drm_mode_object_get_properties(obj, file_priv->atomic, + (uint32_t __user *)(unsigned long)(arg->props_ptr), + (uint64_t __user *)(unsigned long)(arg->prop_values_ptr), + &arg->count_props); + +out_unref: + drm_mode_object_put(obj); +out: + DRM_MODESET_LOCK_ALL_END(dev, ctx, ret); + return ret; +} + +struct drm_property *drm_mode_obj_find_prop_id(struct drm_mode_object *obj, + uint32_t prop_id) +{ + int i; + + for (i = 0; i < obj->properties->count; i++) + if (obj->properties->properties[i]->base.id == prop_id) + return obj->properties->properties[i]; + + return NULL; +} + +static int set_property_legacy(struct drm_mode_object *obj, + struct drm_property *prop, + uint64_t prop_value) +{ + struct drm_device *dev = prop->dev; + struct drm_mode_object *ref; + struct drm_modeset_acquire_ctx ctx; + int ret = -EINVAL; + + if (!drm_property_change_valid_get(prop, prop_value, &ref)) + return -EINVAL; + + DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, ret); + switch (obj->type) { + case DRM_MODE_OBJECT_CONNECTOR: + ret = drm_connector_set_obj_prop(obj, prop, prop_value); + break; + case DRM_MODE_OBJECT_CRTC: + ret = drm_mode_crtc_set_obj_prop(obj, prop, prop_value); + break; + case DRM_MODE_OBJECT_PLANE: + ret = drm_mode_plane_set_obj_prop(obj_to_plane(obj), + prop, prop_value); + break; + } + drm_property_change_valid_put(prop, ref); + DRM_MODESET_LOCK_ALL_END(dev, ctx, ret); + + return ret; +} + +static int set_property_atomic(struct drm_mode_object *obj, + struct drm_file *file_priv, + struct drm_property *prop, + uint64_t prop_value) +{ + struct drm_device *dev = prop->dev; + struct drm_atomic_state *state; + struct drm_modeset_acquire_ctx ctx; + int ret; + + state = drm_atomic_state_alloc(dev); + if (!state) + return -ENOMEM; + + drm_modeset_acquire_init(&ctx, 0); + state->acquire_ctx = &ctx; + +retry: + if (prop == state->dev->mode_config.dpms_property) { + if (obj->type != DRM_MODE_OBJECT_CONNECTOR) { + ret = -EINVAL; + goto out; + } + + ret = drm_atomic_connector_commit_dpms(state, + obj_to_connector(obj), + prop_value); + } else { + ret = drm_atomic_set_property(state, file_priv, obj, prop, prop_value); + if (ret) + goto out; + ret = drm_atomic_commit(state); + } +out: + if (ret == -EDEADLK) { + drm_atomic_state_clear(state); + drm_modeset_backoff(&ctx); + goto retry; + } + + drm_atomic_state_put(state); + + drm_modeset_drop_locks(&ctx); + drm_modeset_acquire_fini(&ctx); + + return ret; +} + +int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + struct drm_mode_obj_set_property *arg = data; + struct drm_mode_object *arg_obj; + struct drm_property *property; + int ret = -EINVAL; + + if (!drm_core_check_feature(dev, DRIVER_MODESET)) + return -EOPNOTSUPP; + + arg_obj = drm_mode_object_find(dev, file_priv, arg->obj_id, arg->obj_type); + if (!arg_obj) + return -ENOENT; + + if (!arg_obj->properties) + goto out_unref; + + property = drm_mode_obj_find_prop_id(arg_obj, arg->prop_id); + if (!property) + goto out_unref; + + if (drm_drv_uses_atomic_modeset(property->dev)) + ret = set_property_atomic(arg_obj, file_priv, property, arg->value); + else + ret = set_property_legacy(arg_obj, property, arg->value); + +out_unref: + drm_mode_object_put(arg_obj); + return ret; +} -- cgit v1.2.3